TY JOUR TI EFFICIENCY OF GRAIN FORMATION PRODUCTIVITY USE OF PISUM SATIVUM L. SELECTION KW pea KW genotype KW non- pergameneous beans KW productivity of seed formation KW variability. JO Vestnik of Kazan State Agrarian University AU Fadeeva , A.. AU Shurhaeva, K.D. PY 2018 IS 13 PB Kazan state agrarian University